• Title/Summary/Keyword: International Research

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Anti-mycobacterial Effects of the Extract of Humulus japonicus (환삼덩굴(Humulus japonicus) 추출물의 항결핵 효과)

  • Hong, Min-Sun;Son, Eun-Soon;Lee, Sung-Joong;Lee, Sun-Kyoung;Lee, Ye-Jin;Song, Sun-Dae;Cho, Sang-Nae;Barry, Clifton E. III;Eum, Seok-Yong
    • Korean Journal of Food Science and Technology
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    • v.46 no.1
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    • pp.94-99
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    • 2014
  • The present study aimed to evaluate the in vitro antimycobacterial effects of hop plant, Humulus japonicus. Methanol extract of H. japonicus (MeOH extract) showed strong direct bactericidal effects against Mycobacterium tuberculosis in vitro. Furthermore, the MeOH extract significantly inhibited M. tuberculosis growth in human macrophages. When five fractions obtained from MeOH extract were examined using the same methods, the hexane and ethyl acetate fractions showed bactericidal effects against M. tuberculosis in vitro, whereas the butanol and water fractions inhibited M. tuberculosis growth in macrophages. Because H. japonicus extract exhibited antimycobacterial activity against both free M. tuberculosis in culture medium and intracellular M. tuberculosis in human macrophages, this plant might be a good candidate for development of a new anti-tuberculosis drug.

A Study on the Way to Enhance Research Performance out of the International Joint Projects under the Framework of National R&D Programs, Focusing Basic and Fundamental Technology (국가연구개발사업을 통한 국제공동연구 성과 제고 방안에 대한 연구 : 기초 및 원천분야를 중심으로)

  • Kim, Tae-Hee
    • Journal of Korea Technology Innovation Society
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    • v.15 no.2
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    • pp.400-420
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    • 2012
  • This study explores the way to enhance research performance focusing basic and fundamental technology when researchers conduct international joint research with counterparts in foreign countries, funded under the National R&D programs. In order to retain validity and objectivity, mixed approaches including qualitative and quantitative are adapted at the first step. Through this step, main factors affecting the research performance can be addressed, such as the number of SCI papers published, conference attendance held both in domestic and foreign countries, researchers holding PhD involving in projects. Then, at the second step, DEA methodology is applied to explore the way to enhance research performance, based on the analysis at first step. The result at second step shows that the various ways can be drawn according to programs respectively and the general assumption of research funds and number of projects affecting positive outcome is not absolutely mentioned. Therefore, this study implies that input variables including research funds are not compatible with research performance in terms of international joint research and suggests further that the decisive outcome and management be reconsidered according to the programs respectively under the national R&D program.

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Using DEA to Analyze the Degree of Global Technology Cooperation at the National Level (DEA를 활용한 국가별 글로벌 기술협력 수준 분석 : OECD 국가를 중심으로)

  • Lee, Mingook;Lee, Sungjoo
    • Journal of the Korean Operations Research and Management Science Society
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    • v.41 no.2
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    • pp.67-80
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    • 2016
  • Under a rapidly changing environment, firms have attempted to co-operate with organizations that possess high technologies to improve their technical capabilities. Most countries have worked towards developing a suitable strategy for international technology co-operation based on the diagnostic results of their technological capabilities and indices. These diagnostic results indicate the level and degree of international technology co-operation that have been developed in academia. However, identifying the overall conditions of international technology co-operation based on existing indices is a difficult task. Hence, to address this problem, indices that can measure diverse perspectives of core technology co-operation activities need to be developed. This research aims to develop a framework for identifying the current state of international technology co-operation in diverse perspectives at the national level. We develop indices based on relevant literature and formulate an analytical framework for international technology co-operation in diverse perspectives using DEA analysis. The results are expected to contribute to effective technology planning at the national level by diagnosing capabilities for international technology co-operation from diverse perspectives.

Packaging Framework System Under International Trade Rules

  • Du, Xue-fei;Cho, Hyun-sook
    • Asia-Pacific Journal of Business
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    • v.13 no.3
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    • pp.119-134
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    • 2022
  • Purpose - The purpose of this study was to expound the packaging framework system(PFS) under international trade rules. Design/methodology/approach - This study analyzed packaging framework system and packaging regulations and technical standards in international regulations and major countries and classified these in some standards Findings - First, the study provides packaging provisions associated with packaging regulations and technical standards (PRTS). Then, the basis of PFS in international trade rules was proposed; it is believed that the PFS was composed of packaging legal system in WTO institutional framework (WTO-PLS), international organization packaging standard system (IO-PSS) and major countries or regions packaging regulatory system (MCR-PRS). Secondly, this paper expounded relations and legal characteristics of the three packaging systems. Finally, This study investigated PRTS coverage under technical barriers to trade (TBT) and Sanitary and Phytosanitary measures (SPS). Research implications or Originality - The regulations associated with PRTS have played a key role in challenges to merchandise trade in international trade. This study has significance in classifying packaging related reticulations into several criteria unlike previous studies. Therefore it is hope that this study can provide a supplementary document for the existing research of PRTS.

The Relationship between Shopping Value and Shopping Orientation on Purchase Intention at International Shopping Spot

  • Park, Seolwoo;Park, Sohyeon
    • Journal of Korea Trade
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    • v.25 no.8
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    • pp.45-56
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    • 2021
  • Purpose - This study examines the relationship between the global consumer's shopping value and the intent to purchase in many of today's emerging international malls. furthermore, the orientation of shopping will be examined to see if there is a significant mediating effect between the value of shopping and willingness to purchase in international shopping malls. Design/methodology - This study conducted a survey of Chinese travelers who had experience in visiting a shopping mall during their visit to Korea through an online panel research agency and received a total of 230 responses. To confirm the relationship with constructs, the structural equation model (SEM) was used to test hypothesis in this research. Findings - The study was to examine the relationship of the international consumers' shopping value to the purchase intention in shopping mall when they visit to other countries, and to find if there was any effect on the relationship between the shopping value of the shopping orientation and the willingness of the international shopping mall. Originality/value - By confirming the relationship between international consumers' shopping value and shopping orientation, this study proposed the theoretical implications for global consumers' shopping behavior. In addition, this result can affect the development of service programs for foreign consumers.

Investigation of the ASTM International frost heave testing method using a temperature-controllable cell

  • Hyunwoo, Jin;Jangguen, Lee;Byung-Hyun, Ryu
    • Geomechanics and Engineering
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    • v.31 no.6
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    • pp. 583-597
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    • 2022
  • Frost heave can cause uneven ground uplift that may damage geo-infrastructure. To assist damage-prevention strategies, standard frost heave testing methods and frost susceptibility criteria have been established and used in various countries. ASTM International standard testing method is potentially the most useful standard, as abundant experimental data have been acquired through its use. ASTM International provides detailed recommendations, but the method is expensive and laborious because of the complex testing procedure requiring a freezing chamber. A simple frost heave testing method using a temperature-controllable cell has been proposed to overcome these difficulties, but it has not yet been established whether a temperature-controllable cell can adequately replace the ASTM International recommended apparatus. This paper reviews the applicability of the ASTM International testing method using the temperature-controllable cell. Freezing tests are compared using various soil mixtures with and without delivering blow to depress the freezing point (as recommended by ASTM International), and it is established that delivering blow does not affect heave rate, which is the key parameter in successful characterization of frost susceptibility. As the freezing temperature decreases, the duration of supercooling of pore water shortens or is eliminated; i.e., thermal shock with a sufficiently low freezing temperature can minimize or possibly eliminate supercooling.

Analysis of Digitalization Strategies for Tourism Industry in South Korea

  • Ji Young JEONG;Mamurbek KARIMOV;Mamta BHATT;Ji Young HAN;Yong Geun KIM
    • The Journal of Economics, Marketing and Management
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    • v.12 no.1
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    • pp.17-28
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    • 2024
  • Purpose: This paper is designed to deliver a deeper understanding of the implications of digitalization strategies in the tourism industry, exploring the opportunities and challenges in South Korea. Research design, data and methodology: To identify effective strategies, an integrated approach is employed in the research that encompasses the Glocal RPM analysis and SANEL HERMES model, as well as the examination of digital tourism factors within the DIANA economy. The data used for this study were derived from multiple sources, including literature review, participation interview, tourist survey and expert questionnaire. By conducting a tourist survey using questionnaires in this research, Glocal RPM and SANEL HERMES hybrid method is used identifying and classifying influencing factors limiting digitalization in tourism. As a final step, experts use a Quantitative Strategic Planning Matrix to propose, assess, and rank a number of digitalization strategies. Results: According to the analysis, the study revealed that combining both tools contributes to a more holistic understanding of the environment, uncovering the positives and negatives from diverse perspectives. The average satisfaction percentage of experts was determined to be 38%, indicating anatal level of digitalization for tourism industry in South Korea. Conclusions: These results can serve as a valuable guide for policymakers and stakeholders in formulating targeted strategies to enhance glocalization, rationality, professionalism, and morality within the digitalization context.

Comparison of Malonyl Ginsenoside Contents in Parts of Korean Ginseng (고려인삼의 부위별 Malonyl Ginsenoside 함량 비교 분석)

  • Park, Young Sik;Oh, Myeong Hwan;Lee, Hwan;Jung, Jong Tae;Jo, Yun Ho;Pyo, Mi Kyung
    • Korean Journal of Pharmacognosy
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    • v.48 no.1
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    • pp.82-87
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    • 2017
  • Malonyl ginsenoside content of the Panax ginseng C.A. Meyer is known to account for 35% to 60% of total ginsenosides content. However, its distribution by ginseng part has not been studied. In this study, four kinds of malonyl ginsenosides were compared in Korean white ginseng part using the purified malonyl ginsenoside standards in our laboratory. White ginseng was prepared by the freeze drying ($-70^{\circ}C$, 48 h) or air drying ($50^{\circ}C$, 48 h) methods form 4-year-old ginseng. Malonyl ginsenoside content of main, lateral, and fine root, and of the main root without skin and its skin was compared. Malonyl ginsenosides (m-Rb1, m-Rb2, m-Rc and m-Rd) content (58%, 19.17 mg/g) in total ginsenosides of air dried white ginseng was decreased about 4% compared to its content of freeze dried white ginseng (62%, 20.40 mg/g). Malonyl ginsenoside content was the highest in fine root, compared to the main or lateral root. Malonyl ginsenosides content in skin of main root was 20.08 mg/g, while its content of the main root without skin was 2.58 mg/g. These results are expected to help establishment of quality specification and processing process in Korean white ginseng.